Home / 86,470.38-129,682.35-33,150.78

Finding the Fourth Proportional to 86,470.38, 129,682.35 and 33,150.78

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Solution

The fourth proportional to 86,470.38, 129,682.35 and 33,150.78 is: 49,717.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,470.38 : 129,682.35 = 33,150.78 : x
  2. Step 2: Convert to fraction form
    86,470.38/129,682.35 = 33,150.78/x
  3. Step 3: Cross multiply
    86,470.38x = 129,682.35 × 33,150.78
  4. Step 4: Simplify right side
    86,470.38x = 4,299,071,054.73
  5. Step 5: Solve for x
    x = 4,299,071,054.73/86,470.38
  6. Step 6: Final answer
    x = 49,717.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.